SSC SSC MTS & Havaldar Mock Test Series 2024 Quantitative Aptitude Speed Time and Distance Problem on Trains
A 320 m long train A passes a pole in 24 seconds and passes completely another train B running in the opposite direction at 72 km/h in 21 seconds. How much time (in seconds) will train B take to cross completely a tunnel of length 420 m?
1
40
2
35
3
42
4
36